[TUHS] Release Dates, Systems History - (was Did System V Really Prevent 5BSD?)

[Mary Ann Horton via TUHS]

On 12/29/25 13:10, Clem Cole via TUHS wrote:
> - Initial Internal Release: Some sources indicate an initial release in
>        1980. This was likely a pre-commercial version known internally by names
>        such as UNIX/TS 3.0.1 or UNIX Release 3.0.
>        - Official Commercial Release: AT&T formally announced System III in
>        late 1981, and it was first made publicly (commercially)
> available outside
>        of the Bell System in 1982.
My UNIX Release 3.0 manual is dated June 1980. It's from Dolotta, 
olsson, and Petruccelli, Lab 364. The Acknowledgements page describes it 
(the manual) as descended from V6, UNIX/TS 1.1, and PWB/UNIX 2.0. My 
understanding is that this eventually turned into System III.
> AT&T's UNIX System V had major releases starting with the initial System V 1983,

My UNIX Release 5.0 manual is dated June 1982. It was internal to Bell 
Labs Division 452 (the computer centers). I understand this turned into 
System V.

Thanks,

/Mary Ann Horton/ (she/her/ma'am)
       Award Winning Author
maryannhorton.com <https://maryannhorton.com>